Permutation-lock



e M. L. HALL an W. H. LLDRIDGL.

' PERMUTATION LOCK.

No. 465,131. Patented Dec. 15, 1891.

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MARQUIS L. HALL AND lVlLLIAM H. ELDRIDGE, OF OMAHA, NEBRASKA.

PERMUTATIoN-LOCK.

SPECIFICATION forming part of Letters Patent No. 465,131, dated December15, 1891.

Application led July 1l, 1891. Serial No, 399,146. (Model.)

T0 all whom it may concern.'

Be it known that we, MARQUIS L. HALL and WILLIAM H. ELDEIDGE, citizensof the United States, residing at Omaha, in the county of Douglas andState of Nebraska, have invented certain new and useful Improvements inPermutation-Locks; and we do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe annexed drawings, making a part of this specification, and to theletters of reference marked thereon.

This invention relates to certain new and useful improvements inpermutation-locks, and is designed more particularly as an improvementupon the construction shown in the Patent No. 453,238, granted to usJune 2, 1891.

The invention has for its objects, among others, to constitute it a lockthat may be operated in the dark by the sense of touch or sound. Toimprove the eat-ch so that when the knob is pulled the bolt strikes andis forced back, thus allowing the door to open by simply pulling on theknob.

The invention has for a further object to improve generally upon thisclass of locks to make them more perfect in their construetion andoperation and less liable to get out of order. In the present instancethe pin that moves the loose disk is attached to an arm which isfastened to the shaft and held by the nut that holds the xed disk,thepin passing through a slot or slots in the xed disk as it acts upon theloose disk. We form the end of the catch with an incline, with which thebolt engages and permits the door to be opened by a simple pull on theknob. lVe place a third disk upon the knob-shaft, which disk has anotched or pointed periphery, a pointer being used which is attached toa spring, which spring presses the point into the notches as the diskturns by turning the knob, the point passing from notch to notch, makinga clicking sound that may be readily heard and an impression easilyfelt. The face of the disk is provided with gures arranged in circularform with two figures in a place, running in opposite directions, one ofwhich denotes the number of clicks the disk is to be turned forward andthe other'so many clicks in the opposite direction to bring the twoslots in the fixed and loose disks coincident. This third disk isprovided with circular slots corresponding with those in the xed disk,through which the pin passes to move the loose disk. A flat strip ofmetal is attached to the shaft and extends across the face of the disk.rlhis we term the bridge.7 It is formed at one end sufficiently wide tocover two or more notches, the other end being reduced to a point anddesigned to rest at two of the figures. When the disk is turned, thebridge passes under the spring-point, causing no sound or vibrationuntil the point reaches the first notch of the disk not covered by thebridge.

Other objects and advantages of the inven tion will hereinafter appear,and the novel features thereof will be specifically defined by theappended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form a part of thisspecication. and in which- -Figure 1 is a rear elevation of our improvedlock, with portions in section and parts broken away. Fig. 2 is ahorizontal section on the line .e a' of Fig. 1, the line y y in thisView showing the line on which the section of Fig. 1 is taken. Fig. 3 isan elevation of the catch removed and portions of the disks broken away.Figa is a like view with the notched disk removed and the other disksbroken away. Fig. 5 is an inside view of the case removed. Fig. 6 is aninside view looking at the parts inside the case, the shaft beingremoved, the View being taken looking toward the front of the lock, thedisks also being removed.

. Like letters of reference indicate like parts throughout the severalviews.

The lock, as hereinafter described, is adapt ed for use in all placeswhere locks of this character are desirable to be used, and we wish thescope of our present invention to be so understood.

Referring now to the details of the drawings by letter, A designates ashaft or spindle having at its outer end an operating knob Orhandle a,by which it may be revolved, and B is a disk which is secured to theshaft in such a manner as to at all times revolve therewith, andtherefore, for convenience in distinguish- IOO ing the severaldisks, wewill call this the fixed disk. This disk is provided with a short radialslot b, extending inward from its periphery, and with a circular slotextending nearly the entire circumference of the disk, leavingaportionZ1', which serves as a stop, as will hereinafter appear. This circularslot b2 is seen best in Figs. l and 3. Any suitable means may beemployed for connecting these parts-such, for instance, as is describedin our prior patent or any other preferred means.

C is a loose disk upon the shaft and provided with a radial slot c andwith a projecting pin or lug c', as seen in Figs. l, 2, 3, and 4, whichWorks in the circular slot ot' the fixed disk, as seen in said views.These two disks are of substantially the same diameter, as seen in Fig.2, and their radial slots are designed at predetermined periods to becoincident with each other.

D is the third disk. It is fast upon the shaft, so as to revolvetherewith at all times. It is provided around its periphery with aplurality of notches d, which are numberedl with two sets. of figures,which are reversely arrangedthat is, one Set running in one directionaround the disk and the otherset in the opposite direction, as seenclearly in Fig. l. This disk is provided with a circular slot d',

which is coincident with the circular slot of` the fixed disk, as seenbest in Fig. 1. The slot in this` third disk is interrupted by thebridge E, which is a piece of metal which is fast. upon the shaft andextends fiush with the periphery of the third disk and is of sufficientsize to cover two or more of the notches in said disk. Its other end isreduced to forma pointer d3, as seen in Fig. l.

Any suitable means may be employed for. securing the disk upon theshaft.

Eis an arm fast upon the shaft and secured also to the third disk, asseen at e, and provided with a portion at right angles to its length andworking in the circular slots of the third and fixed disks and adaptedto engage the lug c of the loose disk and move said loose disk atpredetermined times. A washer i separates the fixed and loose disks,

as seen best in Fig. 2. It is formed with a segmental portion t', whichengages a similar recess 2 in the bossI of the outer plate or face ofthe part to which the lock is applied and in Figs. 2 and 4. It has lugsor prongs 3, which are bent at an angle, so as to raise the. washerslightly from contact with the disk. A washer J separates the fixed andthird disks, as seen in Fig. 2.

The bolt F consists of a plate designed to slide between the lugsf onthe inner face of the part to which the lock is applied and providedwith an elongated opening f', embracing the boss of the said part, asseen in Figs. 2 and G, and at one end it is provided with the tapered orinclined latch or tongue F,

which is designed to engage the catch G upon fthe third disk. `throughan openingk in the back of the lock yand protected by a cap M with lugsm upon it, and the back of the lock provided with therein, asseen inFig. 5.

placed on, the lugs should be coincident with the said notches or slots,and thenby turning rieadilyV understood.

the frame or other part G, the said catch being beveled or inclined uponits acting face and urged outward by a spring G2, arranged in a suitablecasing, as seen `in Fig. 1. The bolt is urged forward by suitable means,as the springs Il, which are crosses, as shown in Figs. l and 6, one endof each being secured to or arranged to act against a lug g on the endof the bolt-plate, as seen in4 Fig. 6, and the other ends being securedto some fixed part on the part G2, as seen in Fig. 6.

K is a casing designed to cover the parts above described. It may besecured detachably in place in any suitable manner, as by screws orother means 7c, passed through the the apertured lugs or ears 71; of thesaid casing, the casing being open upon the end through which thebolt-plate works, as seen chamber L, Within which is arranged to Work aspring-actuated pin, L', which is normally forced outward and engagedwith a notch of The disks are` accessible notches or slots m aroundthevsaid opening When the cap isV the cap the lugs clasp the back of thelock, as

Vseen in Fig. 5, and the cap is thus held fast and cannot be removeduntil the lockfisfopen.

N is a lever pivoted at n to the inner face presses the lever down, sothatl itsnotch; en-` :gages one of the lugs of the cap and-prevents litfrom turning until the lockl isI opened; The leveris then raised by aspring @,whicli` `allows the cap to be turned until, its lugsare :1coincident` Witlithe notches in the` back of the loclqwhen the cap maybe taken off. To remove the cap when the lock isop'ened press` on thebolt and turn the cap to the, left and lift it off.

Various modifications in detail may` bere4 'sorted to Vwithoutdepartingl fromy the spirit of the 4invention or sacrificing any of its,adavantages. through which the shaftA passes, as seen best z With theparts constructed and arranged as above described- Lthe operation willbe the fixed and third disks are turned- With it and the point of thepin L rides fromnotch- .to notch ofA the third disk, making aclickingsound. When the disk is turned, the bridge passes under the spring pinor point, causingV no sound or vibration until the point reaches thefirst notch beyond the bridge,When thefirst click is heard, and then thecount commences. .After counting the predetermined number-of clicks theknob is thenturned backward until 'after the bridge ispassed and thenthe count As the knob is turned'.

IIO

commences. The number of counts backward and forward are determined bythe figures at the pointer. These counts may be changed as occasion mayrequire by moving the bridge and bringing the pointer to another set offigures. The loose disk is moved to bring its radial slot coincidentwith the slot of the Xed disk by the bent end of the arm E engaging thelug of the loose disk.

What We claim as new is- 1. In a permutation-lock, the combination, witha series of tumblers or disks and means for rotating them, of a notcheddisk, aspringactuated pin engaging the same, and a bridge covering oneor more of the notches, as set forth.

2. In a permutation-lock, the combination, with a fixed disk, a loosedisk, and a notched disk, and means for rotating them, ofaspringactuated pin engaging the periphery of the notched disk, and abridge covering one or more of the notches and provided With a pointer,as set forth.

3. In a permutation-lock, the combination, with a fixed disk, a loosedisk, a notched disk, and means for rotating them, of a springactuatedbolt, a spring-actuated pin, and a bridge and pointer, as and for thepurposes specified.

4. In a permutation-lock, the combination, With the fixed disk havingradial and curved slot, of the loose disk having radial slot, thenotched disk having curved slot, the lug on the loose disk, and the armon the shaft of the disks, having bent portion extending through toengage one of said lugs to hold the cap in n place, as set forth.

7. In a permutation-lock, the combination, with the lock-case and itsinclosed parts, said case boing provided with an opening having notches,of a cap fitted to said4 opening and provided with lugs, aspring-actuated lever having a notch to engage one of the said lugs, andthe spring-actuated bolt, all `as and for the purpose specified.

8. In a permutation-lock,a notched disk provided with two sets offigures reversely arranged, and a bridge having a portion eX- tendingover one or more of said notches and adapted to serve, substantially asspecified.

In testimony that We clainrthe above We have hereunto subscribed ournames in the presence of two Witnesses.

MARQUIS L. HALL. WILLIAM II. ELDRIDGE. lVitnesses:

BUT ROBERTS, I. N. PATRICK.

